<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset='UTF-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>Document</title>
    <script src='../vue.js'></script>
</head>

<body>
    <div id='app'>
        <div :style="divStyle"></div>
        <div :style="divStyleArr"></div>
        <div  style="width: 100px;height: 100px;" :style="{background:bgColor}"></div>
    </div>
    <script>
        const vm = new Vue({
            el: '#app',

            data() {
                return {
                    divStyle: {
                        background: 'red',
                        width: '100px',
                        height: '100px',
                    },
                    divStyleArr: [{
                            background: 'pink'
                        },
                        {
                            width: '100px'
                        },
                        {
                            height: '100px'
                        },
                    ],
                    bgColor: "blue"
                }
            }
        })
    </script>
</body>

</html>